SOLUTION: Two planes, which are 1580 miles apart, fly toward each other. Their speeds differ by 90mph. If they pass each other in 2 hours, what is the speed of each?

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Question 1157573: Two planes, which are 1580 miles apart, fly toward each other. Their speeds differ by 90mph. If they pass each other in 2 hours, what is the speed of each?
Answer by ikleyn(52798) About Me  (Show Source):
You can put this solution on YOUR website!
.

    2*x + 2*(x+90) = 1580   miles is the total distance.


(x is the speed of the slower plane; " 2 " represents 2 hours).


From the equation, step by step


    2x + 2x + 180 = 1580

    4x            = 1580 - 180 = 1400

     x = 1400/4 = 350 miles per hour is the speed of the slover,

                   and  350 + 90 = 440 miles per hour is the speed of the faster.

Solved.

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